package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.apache.tomcat.util.security.MD5Encoder;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        //spring自带的工具类
        String password = DigestUtils.md5DigestAsHex(employeeLoginDTO.getPassword().getBytes());
        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //使用md5对数据进行加密
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工接口
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        System.out.println("新增员工service的当前线程的id " + Thread.currentThread().getId());
        //新建员工实体类
        Employee employee = new Employee();
        //复制属性
        BeanUtils.copyProperties(employeeDTO,employee);
        //添加特有的属性
        //设置账号的状态，默认正常状态 1表示正常 0表示锁定
        employee.setStatus(StatusConstant.ENABLE);

        //设置密码，默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置当前记录的创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //设置当前记录创建人id和修改人id
//        employee.setCreateUser(BaseContext.getCurrentId());//目前写个假数据，后期修改
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);//后续步骤定义

    }

    /**
     * 分页查询员工列表
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        PageResult result = new PageResult();
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //查询数据
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO.getName());
        result.setRecords(page.getResult());
        result.setTotal(page.getTotal());
        return result;
    }

    /**
     * 启用或者禁用员工等于
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        if(1 == id){
            throw new RuntimeException("超级管理员不允许修改状态");
        }
//        //修改状态
//        int rows = employeeMapper.startOrStop(status,id);
//        if (rows < 1) {
//            throw new RuntimeException("修改状态失败");
//        }
        Employee build = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(build);

    }

    /**
     * 回显员工
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        //需要注意的是要把密码隐藏，或者展示成******
        employee.setPassword("********");
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置更新时间和更新人
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }


}
